Measuring and visualising the quality of models

The quality of graphical software or business process models is influenced by several aspects such as correctness of the formal syntax, understandability or compliance to existing rules. Motivated by a standardised software quality model, we discuss characteristics and subcharacteristics of model quality and sugest measures for those quality (sub)characteristics. Also, we extended SonarQube, a well-known tool for aggregating and visualising different measures for software quality such that it can now be used with repositories of business process models as well. This allows assessing the quality of a collection of models in the same way that is already well-established for assessing the quality of software code. Given the fact that models are early software development artifacts (and can even be executable and thus become a part of a software product), such a quality control can lead to the detection of possible problems in the early phases of the software development process.